Ventilator and exhaust.



A; F. SOHWANNEOKE. VBNTILATOR AND EXHAUST.

APPLICATION FILED JAN. 11, 1910.

Patented Oct. 18,1910.

g ggw WITNESSES.

' ATTORNEYS THE mmn s pnzns co., WJsNINGrDN, n c.

rinrrn ALBERT F. SGI-IWANNECKE, OF NEW YORK, N. Y.

VENTILATOR AND EXHAUST.

Specification of Letters Patent.

Patented Oct. 18, 1914).

Application filed January 11, 1910. Serial No. 537,457.

To all wh0m it may concern:

Be it known that I, A BERT F. SoHwAN- NECKE, a citizen of the UnitedStates, and a resident of the city of New York, borough of the Bronx, inthe county and State of New York, have invented a new and ImprovedVentilator and Exhaust, of which the following is a full, clear, andexact description.

This invention relates to certain improvements in that type ofventilating or exhausting device, which is adapted to be perma nently ordetachably supported adjacent the upper or lower edge of a window topermit of a circulation of air to or from the room, without theproduction of a direct draft.

In my improved device, I provide a tubular member having air ports atits ends communicating with the outside atmosphere, and air portsintermediate its ends communicating with the interior of the room. Bymeans of this construction, no snow or rain can blow directly into theroom through the device, and the tubular member itself serves as anejector or as an injector, dependent upon the relative temperatures ofthe inside and outside atmosphere. The air after entering through theports in the sides of the tubular member is prevented from blowingdirectly into the room, but is deflected upwardly, so that it willbecome thoroughly mixed with the air already in the room.

The invention may assume various different forms and the details may berevised at will without departing from the spirit of my invention.

One specific form of the device will be described hereinafter, and thescope of the invention defined in the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures, and in which Figure 1 is aperspective View of a device constructed in accordance with myinvention; Fig. 2 is a transverse section therethrough, said sectionbeing taken approximately on the line 2-2 of Fig. 3; Fig. 3 is alongitudinal section through the tubular member secured in positionabove the window, said section being taken approximately on the line 3-3of Fig. 4: Fig 4 is a top plan View of the device shown in Fig. 3, thewindow casing being shown in section;

Fig. 5 is a top plan view of a ventilator adapted to be detach-ablysupported below the window, the window casing being shown in section;and Fig. 6 is a transverse section through the ventilator shown in Fig5, said section being on an enlarged scale and. taken approximately onthe line G6 of Fig. 5.

My improved device in its preferred form, includes a body portion 10,substantially of tubular form and circular in cross section. From thisbody portion, there is a lateral extension 11, having a top wall 12,substantially tangential with the body portion, and a bottom wall 13parallel to the top wall 12 and extending substantially radially of thebody. Thus, the extension is of a depth approximately equal to one-halfthe radius of the body portion. These relative proportions need notnecessarily be maintained. The ends of the tubular body portion are openand covered with wire gauze 14, which prevents the admission of insectsor particles of foreign matter, without materially impeding the flow ofthe air. These two ends of the tubular body portion comprise the airoutlet ports when the device is used as an exhaust above the window, andserve as air inlet ports when the device is used as a ventilator belowthe window. The two walls 12 and 13 are adapted to be disposed betweenthe edge of the window casing and the window sash, to support thetubular body portion outside of the window and with its axissubstantially parallel thereto. The extension 11 has end walls 15,substantially in the plane of the gauze walls 141, and the top wall 12terminates at a considerable distance from the inner end of these walls,so as to leave a long passage or port 16, through which the air may passfrom the interior of the extension to the interior of the room, or viceversa. The extension 11 carries a flat wall. 17, which may alsoterminate at a distance below the top wall 12, so as to increase thewidth of the air passage 16, as indicated in Fig. 2, if the device is tobe used above the window and as an exhaust port, but if the device is tobe used below the window as a ventilator, the extension is made ofsomewhat greater depth, as is illust-rated in Fig. 6 and the front wall17 is exto the extension through two ports 18, 18, disposed adjacentopposite ends of the body portion and in the wall thereof opposite tothe extension. These ports are covered with gauze, so as to prevent theadmission of any foreign body to the interior of the room by way of theextension. As an additional means for permitting the escape of air fromor the entrance of air to the body portion, I may provide a port in thelower side of the body portion, midway between the ends. The necessityfor this port and the size of the port, will depend upon the form of thewindow sill, the position of the window in respect to adjacentbuildings, and various other conditions which may affect the aircurrents in the vicinity of the ventilator. This port may be made ofadjustable size, so that it may be increased or decreased to suit theconditions, or suitable tests may be made to determine the conditions,and the port may be of permanent size in accordance therewith. Asillustrated, I provide this port 19 with two slides 20, 20, movablebetween guides 21, 21, and toward and from each other. As illustrated inFig. 3, these two slides have been moved toward each other, so as tocompletely close the port 19, but they may be moved away from each otherto open the port to any desired extent. The ventilator may be secured inposition in various different ways, but preferably I provide each endwall 15 with an outwardlyextending flange 22. This flange is of a heightequal to the depth of the extension, so as to extend from the end walls15 to the window casing, if the ventilator be somewhat shorter than thewidth of the window. The device when used above the window, ispreferably permanently secured in position, and these flanges 22 may bebent at right angles and nailed or screwed to the wall, as indicated inFig. 4. If the device is to be used below the lower sash, the flanges 22may extend into two wooden blocks 23 and 24, which are of a height equalto the height of the flanges and of a thickness corresponding to thethickness of the window casing. One of these flanges 22 may be rivetedor bolted to the block 23, as indicated at'the left-hand end of Fig. 4,and the other may be slidably supported friction tight within the block24, as indicated at the right-hand end of Fig. 5.

Vith the device in use as a ventilator below the lower sash, the air mayfreely enter either end of the body portion through the gauze 14 andwill pass through the ports 18 and be deflected upwardly into the roomby the wall 17: The direct current of air thus cannot blow directlyacross the room onto a person, and is compelled to intermix with thewarm air in the room to ventilate the room without creating anyundesirable drafts. lVith the device in use above the air will enterthrough the slot or passage 16 and will flow through the gauze-coveredports 18 and out through the ends 14. With the air rushing lengthwisethrough the body portion 10, it will serve as an ejector and tend todraw the air out through the ports 18. This ejector action isfacilitated to a considerable extent, by the presence of the port 19.This port 19 also permits the escape of any rain water which may beatinto the ventilator through the ends 14.

The direction of the flow of air through my improved device depends uponthe relative temperatures within and without the room and the directionor character of the wind that may be blowing outside. If the temperaturewithin the room be warmer than the outside atmosphere, as is usually thecase, the warm air in the upper portion of the room will tend to escapethrough the device if the latter be placed above the window, and if thedevice be placed beneath the window, the colder air outside will enterthrough it.

Having thus described my invention, I claim as new and desire to secureby Letters Patent:

1. A ventilator having a tubular sheet metal open-ended body portionadapted to be disposed outside of a window and having ports adjacentopposite ends in the side thereof, adapted to communicate with theinterior of the building, and having a port in the lower side thereofintermediate the ends and outside of the building.

2. A device of the class described, havin a tubular sheet metal bodyportion provided with an extension disposed lengthwise thercof, saidextension having parallel end walls and parallel top and bottom walls,the wall of the body portion opposite said extension havlnggauze-covered ports adjacent opposite ends, said end walls having sheetmetal brackets adapted to be secured within a window casing to hold thedevice in position.

3. A ventilator having a tubular openended body portion and an extensionleading from the side thereof, adapted to extend through a window, andhaving the interior thereof in communication with the interior of thebody, said extension having a top wall, a bottom wall and an inner sidewall, said side wall and said top wall being spaced apart to leave aport extending approximately the full width of the window, and said sidewall serving to deflect upwardly the air-entering the room through saidbody portion and said extension.

4. A ventilator having a body portion adapted to be disposed outside ofa window, an extension leading from the side thereof and adapted toextend through the window to communicate with the interior of thebuilding, a port in the lower side of said body portion intermediate theends and outside of the building, and means for controlling said port.

5. A ventilator having. a tubular openended body portion adapted to bedisposed outside of the window, and ports in a circumferential Wallthereof adjacent opposite ends, and extension having one side thereofsubstantially tangential to the circumferential Wall of said body andhaving a second side substantially parallel to the first-mentioned side,said sides adapted to engage with the edge of the window, and the windowcasing, and means at the ends of said extension for securing theventilator in position.

6. A ventilator having a tubular openended body portion adapted to bedisposed outside of the window and ports in a circumferential wallthereof adjacent opposite ends, and an extension having one side thereofsubstantially tangential to the circumferential wall of said body andhaving a second side substantially parallel to the firstmentioned side,said sides adapted to engage With the edge of a Window and the Windowcasing.

7 A ventilator having a tubular sheet metal body portion provided withan extension disposed lengthwise thereof and of a length substantiallyequal to the length of said body portion, said extension having parallelsheet metal end walls and parallel sheet metal top and bottom walls, theWalls of the body portion opposite said extension having ports forestablishing communication between the interior of the extension and theinterior of the body and said end walls, said extension having bracketsadapted to be secured within a window casing to hold the device inposition.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ALBERT F. SGHl/VANNEGKE. lVitnesses:

M. E. NESTOR,

CHARLES WVELGH.

